Design of a dual-band rectifier for wireless power transmission (original) (raw)
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Design of Compact Dual-Band RF Rectifiers for Wireless Power Transfer and Energy Harvesting
IEEE Access, 2020
In this paper, we propose a compact dual-band impedance matching network (DBIMN) for radio frequency (RF) rectifiers. The DBIMN is achieved with a single-stage T-type network, with only three segments of the transmission line. We investigate the closed-form design equations, as a design guideline of the DBIMN. In addition, we propose the design methodology of the rectifier using the DBIMN. For validation, we design two dual-band rectifiers (0.915 and 2.45 GHz), for different input power levels. The rectifier with high input power level, is designed for a wireless power transmission (WPT) system. With a 12 dBm input power, the measured power conversion efficiencies (PCEs) are 81.7 and 73.1% at the working frequencies. The PCEs becomes 69.2 and 64.1% (at −1 dBm input power) for the low-power input rectifier that can be used in an RF energy harvesting (RF-EH) system. The simulated and measured results match each other well. Compared with previous designs, the proposed designs have advantages in compactness and high efficiency.
Design of a rectifier for 2.45 GHz wireless power transmission
This paper presents a high-efficiency rectifying circuit for wireless power transmission at 2.45 GHz. A filtering and matching network designed by quarter wavelength stubs was developed for suppressing the second and the third order harmonics of 2.45 GHz, 4.9G H zand 7.35 GHz, respectively. The measured RF-to-DC conversion efficiency is 66.5%for an input power level of 10 mW.
A 2.45/5.8 GHz high-efficiency dual-band rectifier for low radio frequency input power
International Journal of Electrical and Computer Engineering (IJECE), 2022
This article proposes a concurrent rectifier for radio frequency (RF) energy harvesting from the popular ambient RF sources wireless fidelity (WiFi) 2.45 and 5.8 GHz bands. A voltage doubler-based converter circuit with the Schottky SMS7630 diode is used, this chosen diode has shown good results for low power levels. To ameliorate the resulting circuit, we used an interdigital capacitor (IDC) instead of a lumped component; and then we added a filter to reject the 3rd harmonics of each operating frequency. A dual-band impedance transformer with a direct current (DC) block function is used and optimized at low input power points for more harvested DC power. The final circuit was, therefore, more efficient and more reliable. The maximum conversion efficiencies obtained from the resulting circuit are about 60.321% for 2.45 GHz and 47.175% for 5.8 GHz at 2 dBm of input power. Compared to other previous rectifiers presented in the literature, our proposed circuit presents high efficiencies at low power levels and at these operating frequencies.
TELKOMNIKA (Telecommunication Computing Electronics and Control), 2018
This work deals with the design, simulation, fabrication and experimentation of a novel 2.45 GHz rectifier for wireless power transmission applications. We have designed a voltage multiplier topology rectifier including 5 Schottky diodes known by their low threshold. This rectifier could perform a wireless power supply for many cases where the use of batteries or wires is impossible due to many limitations. The circuit was analyzed and optimized with the Harmonic Balance method provided by the Advanced Design System (ADS). Good performances are observed through the simulated results and confirmed by the fabrication tests in terms of RF-DC conversion efficiency, DC output voltage level and matching input impedance.
A dual-band rectifier for RF energy harvesting systems
2014 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014
Our cities are surrounded by a large number of radio frequency (RF) signals broadcasted by various wireless systems. In order to enhance the efficiency of energy usage in addition to the purpose of communication, ambient RF energy harvesting systems are designed to harvest and recycle wireless energy for many applications such as battery chargers, sensor devices and portable devices. The main element of the ambient RF energy harvesting system is a rectenna which is the combination of an antenna and a rectifying circuit. Even though the ambient RF energy is widely broadcasted by many systems, the energy is extremely low. Therefore, high performance antenna and rectifying circuits have to be designed for supporting small incident power; also the number of frequency channels of the rectenna can enhance the performance and support different harvesting locations. This paper proposes a dual-band rectifier for RF energy harvesting which is designed to operate at 2.1 GHz and 2.45 GHz. The first channel can provide the maximum efficiency of 24% with 1.9 V of the output voltage at 10 dBm of input power. On the other hand, a maximum efficiency of 18% and 1.7 V of the output voltage can be achieved by the second channel at 10 dBm of input power.
A Dual-Band Rectifier for RF Energy Harvesting
Engineering Journal, 2015
Our cities are surrounded by a large number of radio frequency (RF) signals broadcasted by various wireless systems. In order to enhance the efficiency of energy usage in addition to the purpose of communication, ambient RF energy harvesting systems are designed to harvest and recycle wireless energy for many applications such as battery chargers, sensor devices and portable devices. The main element of the ambient RF energy harvesting system is a rectenna which is the combination of an antenna and a rectifying circuit. Even though the ambient RF energy is widely broadcasted by many systems, the energy is extremely low. Therefore, high performance antenna and rectifying circuits have to be designed for supporting small incident power; also the number of frequency channels of the rectenna can enhance the performance and support different harvesting locations. This paper proposes a dual-band rectifier for RF energy harvesting which is designed to operate at 2.1 GHz and 2.45 GHz. The first channel can provide the maximum efficiency of 24% with 1.9 V of the output voltage at 10 dBm of input power. On the other hand, a maximum efficiency of 18% and 1.7 V of the output voltage can be achieved by the second channel at 10 dBm of input power.
International Journal of Electrical and Computer Engineering (IJECE), 2023
This paper presents a new rectifier design for radio frequency (RF) energy harvesting by adopting a particular circuit topology to achieve two objectives at the same time. First, work with modulated input signal sources instead of only continuous waveform (CW) signals. Second, operate with a wide input power range using the Wilkinson power divider (WPD) and two different rectifier diodes (HSMS2852 and SMS7630) instead of using active components. According to the comparison with dual-band rectifiers presented in the literature, the designed rectifier is a high-efficiency rectifier for wide RF power input ranges. A peak of 67.041% and 49.089% was reached for 2.45 and 5.8 GHz, respectively, for CW as the input signal. An efficiency of 72.325% and 45.935% is obtained with a 16 QAM modulated input signal for the operating frequencies, respectively, 69.979% and 54.579% for 8PSK. The results obtained demonstrate that energy recovery systems can use modulated signals. Therefore, the use of a modulated signal over a CW signal may have additional benefits.
Design of a Dual-Port Multi-Band Rectifier Circuit
In this paper, a compact multi-band rectifier with an improved matching network using inductive matching and multiple impedance transformer stubs is proposed. The maximum simulated RF-to-dc power conversion efficiency (PCE) of the rectifier across the 2.5 kΩ load terminal is (60.6%, 58.2%, 72.1%, 73.6%, and 68%) for an input power of 0 dBm at (0.93 GHz, 1.8 GHz, 2.1 GHz, 2.41 GHz, and 2.6 GHz) operating frequencies, respectively. The proposed rectifier exploits both frequency domain through good impedance bandwidth for GSM/900 (0.90 GHz-0.97 GHz), GSM/1800 (1.760 GHz-1.850 GHz), UMTS/2100 (2.04 GHz-2.160 GHz), Wi-Fi/2.45, and LTE/2600 (2.33 GHz-2.670 GHz), and a spatial domain using dual-port configuration. Thus, the rectifier is a potential candidate for harvesting RF signals in an ambient environment.
DUAL BAND RECTIFYING CIRCUIT FOR RF ENERGY SCAVENGING
This paper reports the design and experimental characterization of a dual-band rectifier for RF energy scavenging. The proposed circuit achieves comparable performances at 1.8 GHz and 2.45 GHz (GSM and ISM bands) for the wireless sensor network (WSN) system. The efficiency of RF-DC conversion can be improve by influence of the rectifying circuit. The analysis is conducted using ADS simulation version 2011, to determine the dc output voltage as well as the efficiency of the rectifier. The results show the rectifier efficiencies around 74.6% at 2.45 GHz and 78.06% at 1.8 GHz. DC output voltages is 6.7 V for simulation, while for measurement the output result is 5.2 V at input signal 20 dBm. The resulting rectifier has shown good effect of input power, load changes and matching circuit with single stub impedance matching, multi stage Wilkinson power combiner and voltage doubler to implement the dual band operation. This study is useful to provide understanding on the optimum technique to design dual-band rectifying circuit for RF energy scavenging. RF signal is used to powered the rectifier including the two frequencies of interest.
Compact dual-band RF rectifier for wireless energy harvesting using CRLH technique
Indonesian Journal of Electrical Engineering and Computer Science, 2021
In this paper, a new dual-band radio frequency (RF) rectifier was designed. The proposed design is a low-profile structure with dimensions of 5×5.5 mm2 owing to the use of lumped elements rather than the conventional transmission lines which occupy large footprints. This property can be potentially exploited to use the proposed rectifier in high dense rectenna arrays to generate high output direct current (DC) voltages. Furthermore, the proposed design adopts the composite right/left-handed composite right left-handed (CRLH) technique to realize the dual-band structure at frequencies of 1.8 and 2.4 GHz. Afterward, the matching circuit was optimized to make sure that it offers good matching. The frequency response shows good matching at both bands which are about -22 and -25 dB respectively. Eventually, the simulated circuit has a conversion efficiency of 52% and output voltages of 0.5 V at -5 dBm for the two bands.